Machine for removing burs from metal pipes.



G. BERGHAUSEN.

MACHINE FOR REMOVING BURS FROM METAL PIPES.

APPLIOATION FILED APR. 9, 1909.

1,029,584, Patented June 18, 1912.

I I /5 1/y narran strains rn'jrnivr enrich.,

GEORGE BERGHAUSEN, F CINCINNATI, OHIO.

MACHINE FOR REID/LOVING BURS FROM METAL PIPES.

Application filed April 9, 1909.

v act description, reference being had to the Vaccompanying drawings, forming part of this specification.

The object of my invention is to provide a convenient and readily adjustable tool for removing the burs or rough edges both outside and in, which usually result when metal pipes are cut into sections, and the device consists of that certain novel construction and arrangement of parts, whereby the tool may be readilysecured upon the end of the pipe andthe rough edges smoothed down on both outside and inside simultaneously by rotating cutters which are simultaneously brought to bear on the exterior and interior of the pipe.

In the drawings Figure 1 is a side elevation of my improved machine. Fig. 2 is a front view of same. Fig. 3 is a horizontal section taken on the lines 3, 3 of Fig. 1.

Fig. 4 is a detailed cross section oit a portion of the device taken on the lines 4, 4 of Fig. 1.

5 is a frame for holding the operating parts which is extended forward at top and bottom to form the cross heads 6, 7, which heads are suitably braced together by the rods 8, 9. Mounted on the upper cross head G between the tie rods 8 and 9 is the adjustable jaw 10 bifurcated and formed with a roughened or serrated contacting surface to grasp the pipe 11. This jaw is adjusted by the screw 12 provided with the hand wheel 13. Mounted in the cross head. 7 are a pair of holding aws 14, 15. The stems of these jaws are flat plates 16, 17 which are provided with a series of holes and the cross head is also provided with a series oi' holes 18, and the jaws are held in place by a pin 19 passing through the holes in the jaws, and in the head. The lower jaws are, therefore, adjusted for the approximate diameter of the pipe to be treated, and the upper jaw 10 is then screwed down tight so that the machine is securely and rigidly attached to the pipe. Loosely mounted in a journal bearing 20 in the middle of the trame 5, is' the spindle 21 on which the pinion 22 is Specification of Letters atent.

Patented J une 18, 1912.

serial No. 488,960.

keyed, and this spindle on its inner end carries the plate 23 lixed thereon. This plate 23 is provided with a longitudinal dovetailed groove 24, within which are mounted slidable tool holding blocks 25, one at either end of the plate 23. These blocks 25 are recessed to hold the cutting tools 26, 26 provided with the triangular cutting edge as shown, and the cutting tools secured in the blocks in any suitable way. Each of the tool holding blocks carries a screw-threaded stem 27, 27 which stems are `loosely secured to the: blocks, so that the screws can rotate, and each screw has screw-threaded engagement with a beveled pinion 28, 28, and these pinions mesh with the beveled gear 29, which is loosely mounted on the spindle 21 between the frame 5 and the plate 23. The beveled pinions and gear are normally pre-` vented from turning with reference to each other, by the angle plates 30, 30, the hori- Zontal side of each plate having a loose engagement with its respective screw 27, and the vertical side of each plate being provided with a beveled tongue 31, 31 which engages in an annular beveled groove 32, in the rear face of the beveled gear 29.

For rotating the plate 23 which carries the cutting tools, I provide the pinion 33 mounted on the crank pin 34 journaled in the frame, which crank pin is provided with the crank handle 35.

With this construction, the angle plates i 30 serve as bearing plates for the screws 27, 27, and with the rotation of the plate 23 by the crank handle, when the machine is in use, there is no tendency of the pinions 28 to rotate, and the gear 29 remains in fixed relation with the pinions, and the parts rotate together. In order, however, to adjust the tool holding blocks 25, 25, to bring the tools to bear quickly on the inside and the outside of the pipe, the screws 27 being threaded in opposite directions, the operator simply rotates by hand the gear 29 which is loose on the spindle 21. This movement causes the pinions 28, 28, to rotate in opposite directions and the screws 27 to advance the blocks 25 in the same direction to bring the blocks and cutters into operative posi 1. In a device of the character specified, v

the combination with the frame, of a plate mounted to rotate therein, means to rotate the same, a clamp on the frame, one member of which has fixed relation with the axis of rotation of the plate, and the other member adjustable to clamp and hold the pipe to be treated, with the axis of the pipe and the axis of rotation or' the plate coincident, and a pair of tool holders mounted to move radially on said plate, and means to adjust simultaneously the tool holders in the same direction to bring them into operative position.

2. In a device of the character specified, the combination with the frame, of a plate mounted to rotate therein, means to rotate the same, a clamp on the frame, one member of which has ixed relation with the axis of rotation of the plate, and the other member adjustable to clamp and hold the pipe to be treated, with the axis of the pipe and the axis of rotation of the plate coincident, and a pair of tool holders mounted to move radially on said plate, a pair ot' pinions, one for each tool holder, with gearing connecting said pinions whereby the actuation of said gearing will simultaneously adjust said tool holders to bring the same into operative position, and means for locking the gear and pinions together.

3. In a device of the character specied, the combination with the frame, of a plate mounted to rotate therein, means to rotate the same, a clamp on the frame, one member of which has iixed relation with the axis of rotation of the plate, and the other member adjustable to clamp and hold the pipe to be treated, with the axis of the pipe and the axis of rotation of the plate coincident, and a pair of tool holders mounted to move radially on said plate, said tool holders having screws loosely secured thereto, with beveled pinions in screw-threaded engagement, one for each screw, and a beveled gear in mesh with said pinions whereby the rotation ot the beveled gear will adjust said tool holders simultaneously in the same direction to bring the tool holders into operative position, and angle plates t-o lock said pinions and gear together.

GEORGE BERGHAUSEN.

Vtnesses ARTHUR H. EWALD, Bassin A. BEALL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

